The slave ship Alert left the African coast carrying enslaved Africans toward Jamaica. About 240 people had been taken aboard.

Vessel: Alert; flag: Great Britain; rig: Brig; estimated standardized tonnage: 182.3. People recorded in connection with the voyage: Captain: Anderson, J; Investor: Anderson, J; Captain: Llewellin, William; Investor: Llewellin, William. The voyage began at Bristol on 13 September 1781. Principal recorded place where captives were acquired: Cape Coast Castle (Gold Coast). Principal recorded disembarkation place: Jamaica, place unspecified. Estimated mortality during the crossing: 4.0%. Recorded outcome: Voyage completed as intended.